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expat 2.1.0

    1: # ltsugar.m4 -- libtool m4 base layer.                         -*-Autoconf-*-
    2: #
    3: # Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
    4: # Written by Gary V. Vaughan, 2004
    5: #
    6: # This file is free software; the Free Software Foundation gives
    7: # unlimited permission to copy and/or distribute it, with or without
    8: # modifications, as long as this notice is preserved.
    9: 
   10: # serial 6 ltsugar.m4
   11: 
   12: # This is to help aclocal find these macros, as it can't see m4_define.
   13: AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
   14: 
   15: 
   16: # lt_join(SEP, ARG1, [ARG2...])
   17: # -----------------------------
   18: # Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
   19: # associated separator.
   20: # Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
   21: # versions in m4sugar had bugs.
   22: m4_define([lt_join],
   23: [m4_if([$#], [1], [],
   24:        [$#], [2], [[$2]],
   25:        [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
   26: m4_define([_lt_join],
   27: [m4_if([$#$2], [2], [],
   28:        [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
   29: 
   30: 
   31: # lt_car(LIST)
   32: # lt_cdr(LIST)
   33: # ------------
   34: # Manipulate m4 lists.
   35: # These macros are necessary as long as will still need to support
   36: # Autoconf-2.59 which quotes differently.
   37: m4_define([lt_car], [[$1]])
   38: m4_define([lt_cdr],
   39: [m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
   40:        [$#], 1, [],
   41:        [m4_dquote(m4_shift($@))])])
   42: m4_define([lt_unquote], $1)
   43: 
   44: 
   45: # lt_append(MACRO-NAME, STRING, [SEPARATOR])
   46: # ------------------------------------------
   47: # Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
   48: # Note that neither SEPARATOR nor STRING are expanded; they are appended
   49: # to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
   50: # No SEPARATOR is output if MACRO-NAME was previously undefined (different
   51: # than defined and empty).
   52: #
   53: # This macro is needed until we can rely on Autoconf 2.62, since earlier
   54: # versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
   55: m4_define([lt_append],
   56: [m4_define([$1],
   57: 	   m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
   58: 
   59: 
   60: 
   61: # lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
   62: # ----------------------------------------------------------
   63: # Produce a SEP delimited list of all paired combinations of elements of
   64: # PREFIX-LIST with SUFFIX1 through SUFFIXn.  Each element of the list
   65: # has the form PREFIXmINFIXSUFFIXn.
   66: # Needed until we can rely on m4_combine added in Autoconf 2.62.
   67: m4_define([lt_combine],
   68: [m4_if(m4_eval([$# > 3]), [1],
   69:        [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
   70: [[m4_foreach([_Lt_prefix], [$2],
   71: 	     [m4_foreach([_Lt_suffix],
   72: 		]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
   73: 	[_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
   74: 
   75: 
   76: # lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
   77: # -----------------------------------------------------------------------
   78: # Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
   79: # by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
   80: m4_define([lt_if_append_uniq],
   81: [m4_ifdef([$1],
   82: 	  [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
   83: 		 [lt_append([$1], [$2], [$3])$4],
   84: 		 [$5])],
   85: 	  [lt_append([$1], [$2], [$3])$4])])
   86: 
   87: 
   88: # lt_dict_add(DICT, KEY, VALUE)
   89: # -----------------------------
   90: m4_define([lt_dict_add],
   91: [m4_define([$1($2)], [$3])])
   92: 
   93: 
   94: # lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
   95: # --------------------------------------------
   96: m4_define([lt_dict_add_subkey],
   97: [m4_define([$1($2:$3)], [$4])])
   98: 
   99: 
  100: # lt_dict_fetch(DICT, KEY, [SUBKEY])
  101: # ----------------------------------
  102: m4_define([lt_dict_fetch],
  103: [m4_ifval([$3],
  104: 	m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
  105:     m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
  106: 
  107: 
  108: # lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
  109: # -----------------------------------------------------------------
  110: m4_define([lt_if_dict_fetch],
  111: [m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
  112: 	[$5],
  113:     [$6])])
  114: 
  115: 
  116: # lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
  117: # --------------------------------------------------------------
  118: m4_define([lt_dict_filter],
  119: [m4_if([$5], [], [],
  120:   [lt_join(m4_quote(m4_default([$4], [[, ]])),
  121:            lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
  122: 		      [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
  123: ])